FreeRTOS Task status information query

Uxtaskpriorityget (): Query the priority of a task
Vtaskpriorityset (): Change the task priority of a task
Uxtaskgetsystemstate (): Gets the status of the task in the system
Vtaskgetinfo (): Get a task information
Xtaskgetapplicationtasktag (): Gets the label value of a task
Xtaskgetcurrenttaskhandle (): Gets the task handle of the currently running task
Xtaskgethandle (): Find a handle to a task based on the name of the task
Xtaskgetidletaskhandle (): Gets the task handle of the idle task
Uxtaskgetstackhighwatermark (): Gets the history remaining minimum value of the task's stack, called "High watermark" in FreeRTOS
Etaskgetstate (): Gets the strong state of a task, the strong state is the Etaskstate type
Pctaskgetname (): Gets the task name of a task
Xtaskgettickcount (): Gets the system Time counter value
XTASKGETTICKCOUNTFROMISR (): Gets the time counter value in the Interrupt service function
Xtaskgetschedulerstate (): Gets the Task Scheduler's strong state, on or not turned on
Uxtaskgetnumberoftasks (): Gets the number of tasks present in the current system
Vtasklist (): Output details of all tasks in the current system in a tabular format
Vtaskgetruntimestats (): Gets the run time for each task
Vtasksetapplicationtasktag (): Set task label (tag) value
Setthreadlocalstoragepointer (): Set thread local storage pointer
Getthreadlocalstoragepointer (): Gets thread-local storage pointer

Examples of Use

/* * ubasetype_t uxtaskgetnumberoftasks (void) * ubasetype_t uxtaskgetsystemstate (taskstatus_t * Const PxTaskStatusArray , * const ubasetype_t uxarraysize, uint32_t * Const pultotalruntime) */taskstatus_t
*statusarray;

ubasetype_t Task_num;      Task_num=uxtaskgetnumberoftasks ();

Get the number of system tasks printf ("Uxtaskgetnumberoftasks%d\r\n", task_num); Statusarray=pvportmalloc (task_num*sizeof (taskstatus_t));//Application memory if (statusarray!=null)//Memory request succeeded {Arra     Ysize=uxtaskgetsystemstate ((taskstatus_t*) Statusarray,//Task Information Store array (ubasetype_t ) Task_num,//task information storage array size (uint32_t*) &totalruntime);//Save the system's total run time printf (
    "taskname\t\tpriority\t\ttasknumber\t\t\r\n"); for (x=0;x<task_num;x++) {printf ("%s\t\t%d\t\t\t%d\t\t\t\r\n", statusarray[ X].pctaskname,//Task Name (int) statusarray[x].uxcurrentpriority,Task priority (int) statusarray[x].xtasknumber); Task number}} vportfree (Statusarray); Freeing memory

Experimental Phenomena

Uxtaskgetnumberoftasks 5

taskname        priority        tasknumber      
query_task      3               5           
led0_task       2               4           
IDLE            0               2           
start_task      1               1           
Tmr SVC              3

Examples of Use

/* * taskhandle_t xtaskgethandle (const char *pcnametoquery) * void Vtaskgetinfo (taskhandle_t xtask, taskstatus_t *pxTas    
Kstatus, * basetype_t xgetfreestackspace, etaskstate eState) */taskhandle_t Taskhandle;

taskstatus_t TaskStatus;         Taskhandle=xtaskgethandle ("Led0_task"); Get task handle//Get Led0_task task information based on Task name Vtaskgetinfo ((taskhandle_t) Taskhandle,//task handle (taskstatus_t*) &amp ;    TaskStatus,//Task Information structure (basetype_t) pdtrue,//Allow statistic task stack history minimum remaining size (etaskstate         ) einvalid);
function to get the task run strong printf ("Task Name:%s\r\n", taskstatus.pctaskname);
printf ("Task number:%d\r\n", (int) taskstatus.xtasknumber);
printf ("Mission Strong:%d\r\n", taskstatus.ecurrentstate);
printf ("Task Current priority:%d\r\n", (int) taskstatus.uxcurrentpriority);
printf ("Task Base priority:%d\r\n", (int) taskstatus.uxbasepriority);
printf ("Task stack base address:% #x \ r \ n", (int) taskstatus.pxstackbase); printf ("Task stack history remaining minimum:%d\r\n ", Taskstatus.usstackhighwatermark); 

Experimental Phenomena

Task Name:                led0_task
Task number:              4
Task strong state:              2
Task Current priority:         2
Task Base priority:           2
task stack base address:         0x200012e8
Task Stack history remaining minimum value:  108

Examples of Use

/* * Etaskstate etaskgetstate (taskhandle_t xtask) */typedef enum {erunning = 0,/* A task is querying the state of itself, so must is running. */Eready,/* The task being queried is in a read or pending Ready list. */eblocked,/* The task being queried is in the Blocked state. */esuspended,/* The task being queried is in the Suspended state, or was in the Blocked state with an infinite ti Me out. */edeleted,/* The task being queried have been deleted, but its TCB have not yet been freed. */einvalid/* Used as an ' invalid state ' value.

*/} Etaskstate;        Taskhandle=xtaskgethandle ("Query_task");            Gets the task handle taskstate=etaskgetstate (Taskhandle) According to the task name;
        Gets the task of the Query_task task Strong switch ((int) taskstate) {case erunning:sprintf (taskinfo, "Running");
    Break
        Case eready:sprintf (TaskInfo, "ready");
    Break
        Case esuspended:sprintf (TaskInfo, "Suspended");
    BreakCase edeleted:sprintf (TaskInfo, "Deleted");
    Break
        Case einvalid:sprintf (TaskInfo, "Invalid");
Break } printf ("Task Strong value:%d, corresponding to the strong state:%s\r\n", taskstate,taskinfo);

Experimental Phenomena

Task strong state value: 0, the corresponding strong state is: Running

Examples of Use

/
* void Vtasklist (char * pcwritebuffer) */

vtasklist (infobuffer);          Get information on all Tasks
printf ("%s\r\n", InfoBuffer);

Experimental Phenomena

Query_task      R   3   192 5
IDLE            r   0   108 2
led0_task       B   2   108 4
TMR SVC         S  236 3